simple responsive solution using flexbox

What are you most proud of, and what would you do differently next time?

I did it quicker than expected, a big improvement using background-url instead of html img elements. I added a media query to improve the design for devices from 800px to 1440px wide. I didn't focused on the font-size, so yeah, it could definitely be improved. I also could use flex-wrap instead of media queries maybe ? This proves to me that I don't really need CSS Grid for such a design if I'm comfortable with Flexbox.